EVERYDAY SCIENCE

Detailed explanation-1: -Among their many tentacles, some jellyfish have parts known as oral arms. These long appendages move captured prey to the animal’s mouth, which is usually found on the underside of the bell. Some species have even ditched a mouth entirely. These jellies ingest food directly through openings in their oral arms.

Detailed explanation-2: -Jellyfish have a simple digestive cavity with four to eight oral arms near the mouth. These arms transport food captured by the tentacles into the mouth. Lacking a brain, jellyfish instead have a elementary nerve net capable of detecting light, odor and other stimuli and coordinating the animal’s responses.

Detailed explanation-3: -The oral arms (of which there are usually four) are located around the mouth and hold the stinging cells, or cnidocysts, which are used to inject potential prey (or potential predators) with venom.

Detailed explanation-4: -Four long tentacles, commonly called mouth, or oral, arms, hang from the centre of the underside, where the mouth of the jellyfish is located. In most cases, 24 other, thinner extensile tentacles hang from the rim of the bell.

Detailed explanation-5: -Most jellyfish are “passive” feeders. This means that they float through the water eating whatever they happen to pass in the water and can fit in their mouths; anything from tiny shrimp and krill to small fish.